I have a Khiel's Ultra Facial Moisturiser that is a little too light weight for me. I also have a Khiel's Midnight Recovery Concentrate oil that I love the smell and feel of but rarely use. I was wondering if I could add some drops of the oil to the moisturiser to make it richer. Although the moisturiser shows water as it's main ingredient it does show smaller amounts of 3 oils. Has anyone ever done this kind of thing or have any advice?